//
|
// execution/detail/as_receiver.hpp
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
//
|
// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
|
//
|
// Distributed under the Boost Software License, Version 1.0. (See accompanying
|
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
//
|
|
#ifndef BOOST_ASIO_EXECUTION_DETAIL_AS_RECEIVER_HPP
|
#define BOOST_ASIO_EXECUTION_DETAIL_AS_RECEIVER_HPP
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
# pragma once
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
#include <boost/asio/detail/config.hpp>
|
#include <boost/asio/detail/type_traits.hpp>
|
#include <boost/asio/traits/set_done_member.hpp>
|
#include <boost/asio/traits/set_error_member.hpp>
|
#include <boost/asio/traits/set_value_member.hpp>
|
|
#include <boost/asio/detail/push_options.hpp>
|
|
namespace boost {
|
namespace asio {
|
namespace execution {
|
namespace detail {
|
|
template <typename Function, typename>
|
struct as_receiver
|
{
|
Function f_;
|
|
template <typename F>
|
explicit as_receiver(BOOST_ASIO_MOVE_ARG(F) f, int)
|
: f_(BOOST_ASIO_MOVE_CAST(F)(f))
|
{
|
}
|
|
#if defined(BOOST_ASIO_MSVC) && defined(BOOST_ASIO_HAS_MOVE)
|
as_receiver(as_receiver&& other)
|
: f_(BOOST_ASIO_MOVE_CAST(Function)(other.f_))
|
{
|
}
|
#endif // defined(BOOST_ASIO_MSVC) && defined(BOOST_ASIO_HAS_MOVE)
|
|
void set_value()
|
BOOST_ASIO_NOEXCEPT_IF(noexcept(declval<Function&>()()))
|
{
|
f_();
|
}
|
|
template <typename E>
|
void set_error(E) BOOST_ASIO_NOEXCEPT
|
{
|
std::terminate();
|
}
|
|
void set_done() BOOST_ASIO_NOEXCEPT
|
{
|
}
|
};
|
|
template <typename T>
|
struct is_as_receiver : false_type
|
{
|
};
|
|
template <typename Function, typename T>
|
struct is_as_receiver<as_receiver<Function, T> > : true_type
|
{
|
};
|
|
} // namespace detail
|
} // namespace execution
|
namespace traits {
|
|
#if !defined(BOOST_ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
|
|
template <typename Function, typename T>
|
struct set_value_member<
|
boost::asio::execution::detail::as_receiver<Function, T>, void()>
|
{
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
|
#if defined(BOOST_ASIO_HAS_NOEXCEPT)
|
BOOST_ASIO_STATIC_CONSTEXPR(bool,
|
is_noexcept = noexcept(declval<Function&>()()));
|
#else // defined(BOOST_ASIO_HAS_NOEXCEPT)
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
|
#endif // defined(BOOST_ASIO_HAS_NOEXCEPT)
|
typedef void result_type;
|
};
|
|
#endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
|
|
#if !defined(BOOST_ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
|
|
template <typename Function, typename T, typename E>
|
struct set_error_member<
|
boost::asio::execution::detail::as_receiver<Function, T>, E>
|
{
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
|
typedef void result_type;
|
};
|
|
#endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
|
|
#if !defined(BOOST_ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
|
|
template <typename Function, typename T>
|
struct set_done_member<
|
boost::asio::execution::detail::as_receiver<Function, T> >
|
{
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
|
BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
|
typedef void result_type;
|
};
|
|
#endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
|
|
} // namespace traits
|
} // namespace asio
|
} // namespace boost
|
|
#include <boost/asio/detail/pop_options.hpp>
|
|
#endif // BOOST_ASIO_EXECUTION_DETAIL_AS_RECEIVER_HPP
|
